Question

Why f-block elements are placed below the modern periodic table..?

Answer 1

Because if you put lanthanides and actinides in to the Periodic Table like transition metals, the table will be way too wide. The two rows of elements present at the bottom of the periodic table are called the 4f series or lanthanoids and 5f or actanoids. They are also called inner transition elements.

Answer 2

Answer:

because they will destroy the shape of the periodic table if they are not placed at the bottom of the periodic table....... mark as brainiest